Rotary engine.



PATENTED FEB- 27, 1906.

R. S. MOINTOSH.

ROTARY ENGINE.

APPLICATION FILED NOV. 5, 1902.

170126272 02; 4 flier/2e J a specifichtion.

wings upon which the fluid acts to rotate the piston and which rotate with the piston. and

thereof in line 2 Unrrnn ROSS S. MolNTOSl-LOF BUFFALO, NEl-V Y BK, ASSEGNOR MANUFACTURING COMPANY. {3F PlTTSB -JRG, .PENESE Specification of Letters lntont.

Entented Feb. 53"., 12306.

A fi tiv fil 1 November 5, 1902. Serial 1%. 180,143.

To 0,2]- whom, if may concern:

Beitlrnown thatl; Ross Mcln'rosn, ecitizen of the United States, 'residin at Buffalo, in the county of Erie and State or New York, have invented new and useful Improvements in Rotary Engines, of which the following is This invention relates to :1V rotary steam, water, or other fluid operated engine or moto! of that type in which a piston is journeled to rotate in apiston-chemoer eccentric thereto and is provided with movable blades or are held in contact with the interior wall of said eccentric piston-chamber in the rotation of the piston.

The object of the invention is to provide an efficient, desire-ole, and economical rotor engine which is of simple and compact construction and of smell ern eter, whereby it is especially adapted for use in steam-boiler tubes or fines for driving a fine cleaner or scraper.

In the accompanying drawings, Figure 1 is it longitudinal section in line 1 1, Fi 2, through a, rotary engine or motor embodying the invention. Fig. 2 is a transverse section 2, Fig. 1. Fig. 3 is a longitudinsl section of the casing in line 3 3, Fig. 2. Fig. 4 is on end View of the casing. Fig. 5 is e plan View of the end cap for the casing. Fig. 6 is a plan view of the lock-nut for the end bushing.

Like letters of reference in the several figures,

A represents a cylinder or casing which is provided with a longitudinal eccentric piston chamber or bore B, which extends pert way of the casing from one end thereof. The casing provided at one end of the pistonchamber with a cylindrical here or hearing socket b, which is concentric with the exterior of the cylinder, the lower end of the concentric bore or socket being closed by av transverse pertiti on b. The end of the casing adjacent to said concentric bore or socket i) is provided with a screw threaded opening (1, adapted to receive the end of a supply-oipe c for steam, water, or other motive fluid. The wall of the casing is rovided with e longitu dinal inlet-passage ior the motive fluid, which communicates at one end with the opening 0 and also communicates by a port refer to like parts other prcie're-il manner.

or ports Z with. the piston-chamber and also with an enlzenst-passege Ll. eh is formed longitniilinnlly in the well of the casing edjw cent to the inlet The exhaust-pessege extends to the end. of the casing opposite to which the inlet-port leads and communicates with the pistorkcheinher by one or more ports or openings.

.9 represents a. cap-ring which is secured to the open end of the casing by bolts or otherwisei The 02.1 ring is provided with one or more openings e, which connect with the exhaust-passage to permit thcescepe of the err-- hausting fluid. i

represents e stationery cylindr cal part or abutment which is provided at oneend with a circular enlargement f, which rests on the transverse partition 6" of the casing, to wl'iich it secured by a screw f or in any This stationery abutment is arranged concentrically within the piston-chernher and extends suhstein tinlly from end to end thereof.

G represents a hollow or tuhulnr rotary piston which is arranged eceentricolly in the piston-chamber surrounding the stationary abutment F, with one oi the piston in contact with or in close proXin'iity to the interiiir surface of the well of the casing.

g represents the engine-shaft, which is secured to or formed i ith one end oi the piston. The

igh the cnp-ring e. 1 g)" represents a. hollow bushing of: sleeve which s irrounds the sheltnnd isscrewed l "o the thrended opening of Hi8 c p-ring'.

5; represent; 5:. lock-nut for t.- bushing. The not is i"\' S-'i(l((l with external dopres sions or notches to went it from oi tructing: the czihoust-openings in the on; ring.

The piston nreiernhly journnled in the following sin-inn 'llhe piston is proi-"iiled at one end r. [tn :1 hnlidieeriug ring or collsr'h, which is screwed on the reduced end portion of the piston and is provided with e. circular bell-groove. The face of the enlargement f ice of the stationary abutment is provided with e cmnplementnry hell-groove, and a circular series of beefing-hells h is confined between said grorwes. The opposite end of the piston is provided with a corresponding bearing ring or collar i, which is screwed on. a. reduced threaded portion of the piston end is rovided with a ball-groove in its outer ace.

1 l1. .7. 1 r s n-tit Enteilkifl out ot the casing or with a ball-groove 1, in which are loosely arranged longitudinal" hear at their inner blades '61 Wings J, which edges against the stationary cylindrical abutment F and at their outer ed es against the interior surface of the Wall 0 the casing or cylinder[ The supply-pipe ,c is connected to any suitable source of supply of steam, water under pressure, or other motive fluid which is de livered bythe supply-pipe to the inlet-passage D, from which. it passes througlrthe in let ports or o enings into the piston-chamber behind the blhdes J. The motive fluid acts on said blades in a well-known manner to cause the rotation of the piston in the direction indicated by the arrow in Fig. 2. As the blades are carried around with th piston they are held out in contact with the interior suriace oi the wall oi the piston-chamber by reason of their inner edges bearing against the cylindrical face of the stationary abutment F, which is concentric with the interior surfaceof the Wall of the piston-chamber. As each blade reaches the exhaust-ports the motive fluid in front of the same finds its way from which it esto the exhaust passage,

the cap of the capes through the openings in casin or cylinder.

I c aim as'm r invention-- 1. The com ination of a casing provided with a longitudinal concentric piston chamber or bore, an inlet-passagefor said cham ber extending longitudinally thereof and communicating therewith by ports, an exhaust-passage also extending longitudinally of said chamber and communicating there with, a cylindrical part fixed concentrically in said piston-chem her, and journalcd at its ends, and a series of blades loosely arranged in longitudinal radial slots of said piston, said blades bearing at one edge against the The hdllow piston fixed cylindrical part, and atithe opposite edge a ainst the wall of said chamber; sub-' stantia ly as described.

2. In a rotary engine, a cylinder or casing having therein a longitudinal, eccentric piston-chamber, .longitudinally-extending inlet and exhaust passages in the chamber, and communicating therewith, one end of said chamber being closedby a trans verse partition-wall around which the inletport extends, and which forms a seat for a piston-bearing, and a piston in said chamber; substantially as described.

3. In a rotary engine, a casi ng having a longitudinal piston-chamber therein open at one end and closed at the other by a partitionwall, a cap-ring closing the other end of the chamber around the piston, said ring having an exhaust ort therein communicating with lon itudina exhaust-passages in the wall of sai chamber, and a piston in said chamber; substantially as described.

4. The combination of a casing provided with a piston-chamber, an inlet-passage communicating with said chamber and extending to one end of said casing, and an exhaust-passage communicatin with said chamber and extending to the ot er end of said-casing, a cylindrical partarranged concentrically in said piston-chamber and fixed at one end to one end of said casing, a tubular piston surrounding said fixed part, arranged eccentrical ly in said piston-chamber, and journaled at one end on said fixed part and at its other end on said casing, a shaft secured to one end of said piston, and blades loosely arranged in longitudinal slots in said tubular piston and i bearing at their outer edges against the wall of said piston-chamber, and at their inner edges a ainst said fixed cylindrical part, substantial iy as set forth.

Witness my hand this 7th day oi" October, 1902.

ROSS S. NICINTOSH,

wall of said 

